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ForewordIntroduction1 Scope2 Terms and definitions3 Test method4 Measurement and determination of the focal spot sizeAnnex A (informative) Preferred values of d for the characterization of X-ray tube types

Defines measuring of focal spot dimensions of industrial X-ray systems up to 500 kV tube voltage. A procedure is outlined for direct mechanical scanning of focal spots higher than 0,1 mm having a highly collimated receiver. Resolution and image quality are dependent upon features of a focal spot, especially the size and two dimensional intensity distribution.